Some volcanoes have explosive eruptions, like the one at mount st. helens in 1980. eruptions like these can cause abrupt changes to earth's surface. which of these could result from an explosive volcanic eruption? a. part of the volcano is blasted away. b. volcanic ash covers the surrounding area. c. a flow of ash and debris rushes down the volcano's slope. d. all of these

your answer would be

D. All of these

Explanation:

I took the test and got it correct

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg